Saint Clair Allergy and Asthma Center, PLLC. April 23 ·. Saint Clair Allergy and Asthma Center welcomes a newer member of our work family, Priscilla Hughes. Priscilla is a super Medical Assistant. She graduated from Carnegie Institute of Troy, class of 2006. With 7 years of primary care experience and 8 years of pain management experience ....